TapirEngine: Proper collision detection

[kichikuou]

Collision detection is based on a mesh named "collision" in the map's 3D model. The "collision" mesh specifies the area in which the character can move in the xz plane, and the y coordinate represents the height of the map at that point.

Now cglm 0.9.2 is required, for 2D AABB operations.

[kichikuou]

FYI: You can view the collision mesh at https://kichikuou.github.io/model-viewer/ by selecting a model under Data\PolyData\Map\ and checking "Show Collision".

[nunuhara]

Thanks!